Crusher.



- T. J. STURTEVANT.

GRUSHER.

APPLIOATIOH FILED MAY 28, 1912.

Patented NW. 19, 912.

' flomem T. J. STURTEVANT.

GRUSHER.

APPLICATION FILED MAY 28, 1912.

Patented Nov. 19, 1912.

3 SHEETS-SHEET 2.

Alforneyg T. J. STURTEVANT. GEUSHBR.

APPLICATION rum) MAY 20, 11112.

L@44,,596 Patented Nov. 19, 1912.

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I Q [NV-'ENTOR: 5L M- m wes difierent srmag THOMASJ'OBEPH STUBTEVANI, OFWELLESLEE', KLS8AOHUSIT'I'S,

Assienoa 'ro STUBTEVANT mt COMPANY, A=GORPQRLTION O3 Y cansmn To allwhmn'c't may concern:

Beit known that I, Tnoms J. S'rmrrnvan'r, a citizen of the UnitedStates, residing at wellesley, and State of Massachusetts, have inventedor discovered certain new and useful Improvements in Crushers, of whichthe following is a specificatiomreterence being had therein totheaccompanying drawings.

, lhis invention relates to certain improvements in that class ofcrushers coverfi by U. S. Patents No. 588,618, August12i, 189?, No.607,575,'July 19, 1898, and No. 777,227, December 13, 1904, and has forits object to provide a crusher of this class which, on account of itsaccessibility for cleaning and convenient adjustahility for ades ofoutput, is more esnecially suitable or laboratory work.

in carrying the present invention into ettoot the fixed or normallystationary anvil l is niounted m a head-block which 18 lunged to theframe of the machine 111 such a mannor that it may be swung asidehorizontally or opened out like a door, so that both of the Jaw plates,as well as the side plates or shields oi the crushing chamberlorreceptacle, will be readily accessible for cleaning. The hinged orswinging head-block, carrying the anvil jaw, is locked in workingposition by means of a hinged side late constructed to engage the saidhea block in such a manner asto hold the latter ri 'dly in place, saidside plate and head-bloc being locked together, when the parts are intheir operative positions, by a suitable latch and set screw. The saidanvil jaw, andto which the normally stationary jaw plate 1s secured-ispreferably hung on the swinging head-block by a pivot near the u per endof the said jaw, the lower part the latter abutting against the heads ofscrews which may be turned to vary the position oi this jaw relative tothe rocking j aw, for the purpose of regulating the fineness of theoutput of the crushing mill or crusher suitable convenient means beingprovided raw turning the screws for the purpose of efiiecting theadjustment referred to.

In the accompanying drawings Figure l is a perspective view of theimproved crusher. Fig.- 2 is a central longitudinal section thereof.Fig. 3 is a. front end. view thereof with the side plate and head blockin the county of Norfolk which coiiperates with their-coking jaw,

ofexu or swung aside for the convenient c caning of the parts. his apartial Elan v1ew illustrating the-swinging head look and side plate andtheir flocking connectlons. Fig. 5 is a detail sectional view showingone of the screw's'for. varying the worlnng position of pivfotallymounted anv l yaw. Figs; 6 and 'l, are detail views illustrating thegearing forkgturning the ad.

justing screws. y

Referrin to the drawings, 12 denotes the frame in w ich is mountedtheidfiving shaft 13 provided with suitable. fly wheels or ull eys 1tand carrying an eccentric 15 whic is goined by the connectingrod 16 withthe rocking-jaw frame 1'? by means of the in 18. 'lhe rocking-jaw flame17 is suspended by means of said connecting rod '16 and a link or links19, said link or links loosely connecting the forward end of, saidrocking rat ateafiqvfne, 191a.

jaw frame with the frame ofl the machine through the pivot pins orjointspf the said link or links. The rear end of the rockingjaw frame 17is braced against theframe 12 by means 01E toggles 20, and is alsoprovided with a pull-bat: rod 21 and coiiperating spring 22, as in themachines of the patents hereinbetore referred to.

The normally fixed or anvil jaw 23, 006perating with the rocking jaw 33,is mounted in a right angular head-block 24 which is attached to themachine frame by means of a vertical pivot-pinfl, the said head-blockbeing held in its working position'by means of a hinged side-plate 2bmounted on a vertical ivot-pin 27 and having a hooked portion 8 whichengages in a suitable recess in the head-block, tor the purpose ofholding the latter. in place; lhe said hinged side plate is locked tothe head-block by means of a ll-shaped latch 29-pivoted to the saidhead-block and overlappm a projection 30 in the said side plate, sailatoh'being secured in place by means ot a screw 31 en gaglrg saidprojection and provided with a ban iently turned. The hinged headblock 22 and the hinged side plate 26 adord two pivoted or swinging door-likeparts which form, when closed, the sides of thecrushing chamber, each ofsaid parts being preferably provided with a remfivable side-plate 43.

The anvil jaw 23 is hinged near its upper end to the head-block 2t bymeans oi a pivotnin 3t, thelower part of said jaw wheel 32 by which itmay be convenresting against the heads of screws 35 aganist which it isurged 'bya coil spring 36 interposed between a horizontal part of saidblock and a stationary part of the machine frame. Rotating on the screws35 are gear nuts or plnions 36 meshing with an intermediate pinion 37attached to a shaft 38 provided witha hand wheel 39 by which the saidshaft 38 may be turned, for the purpose of adjusting the screws 35. Theadjustment of the screws 35 serve to move the normally stationary jaw 23toward or from the rocking jaw 33 for the purpose of regulating theoutput of the crusher. The said screws 35 are locked by a cross rod orwire 40 which will prevent them from turning, and they will therefore bemoved endwise when the pinions thereon are rotated. The jaws 23 and 33are provided with removable jaw plates 41 attached thereto bylocking'pins 42, as in crushers of this class previously in use.

From the foregoing it will be understood that when it is desired toclean the jaw plates and the side plates or shields of the chamber orreceptacle in which the material is cruslied, the screw 31 on the latch29 will be released from the projection on the side plate 28, by turningthe hand wheel 32 on said screw; and when said latch is swung aside thesaid side plate 28 will be released so that it may be opened outward,thus releasing the head-block 24 which may then be swung aside or openedoutward so that the parts will be in convenient position for thoroughlycleaning the jaw plates and the side plates or shields of the crushingchamber. Such cleaning operation is frequently necessary in laboratorywork, owing to the nature of such work in changing to difierentmaterials or samples. Also in laboratory work it is frequently desirableto vary the degree of fineness of the output of the machine by varyingthe relative working 5 positions of the crushing jaws, and this mayreadily be efiected, in this improved machine, by turning the screwsthrough the medium of the hand wheel 39, the shaft 38, and the piniongearing connecting said shaft with said screws. Having thus. describedmy invention claim and desire to secure by Letters'Pat-.

ent:

1. In a crusher, a normally fixed or stationary jaw and a verticallypivoted headblock or support On which the said jaw is mounted so thatsaid head-block or support may be opened outor swung aside for con? Ivenient access to the crushing parts or chamher, combined with means forsecuring said head-block in working position.

2. In a crusher, a normally fixed or stationary jaw and a verticallypivoted headblock or support on which the said'jaw is mounted so thatsaid head-block or support may be opened out or swung aside forconvenient access to the crushing parts or chamber, combined with ahinged side plate and locking means by which said head-block may besecured in working position.

3. In a crusher, a normally fixed or stationary jaw and a verticallypivoted headblock orsupport on which the said jaw is mounted so thatsaid head-block or support maybe opened out or swung aside. forconvenient access to the crushin parts or chamber, combined with meansor securing said head-block in working position, said jaw beingpivotally mounted on said headblcck, and adjusting means by which theposition of said jaw may be varied.

4. In a crusher, a normally fixed or stationary jaw and a head block orsupport ,on which the said jaw is pivotally mounted, combined withadjusting screws by which the position ofsaid jaw may be varied, gearnuts adapted to turn on said screws, a pin ion connecting said gearnuts, means for turning said pinion, and means for locking said screwsfrom turning so thatthey will be moved endwise when said gear nuts areturned. I v

5. In a crusher, a normally fixed or stationary jaw and a head block orsupport on which the said jaw is pivotally mounted, 5 combinedwith'adjusting screws by which the position of said jaw may be varied,gear nuts on said screws, means for turning said gear nuts, and aspring, acting on said pivotally mounted jaw and serving to hold thefree end of the latter against said screws.

6. In a crusher, a normally fixed or stationary jaw and a head block orsupport on which the said jaw is pivotally mounted, combined withadjusting screws by which the position of'said jaw may be varied, gearnuts on said adjusting screws, means for locking said screws when saidgear nuts are turned, and a shaft provided with a hand wheel andcarrying a pinion meshing with said gear nuts.

7. In a crushing machine, the combination'with a movab e jaw, of anormally stationary anvil jaw mounted on a vertically pivoted part sothat it may be swung aside 11. for cleaning. v

8. In a crushing machine, the combination with a movable jaw, of anormally stationary anvil jaw mounted on a vertically pivoted part sothat it may be swung aside for cleaning, said anvil jaw being pivotallyattached to the part on which it is mounted, so that it may be adjustedtoward and from said movable jaw. a

9. In a crusher, the combination with the frame thereof, of twovertically pivoted or door-like parts at the front end of said frame andboth of which parts are adapted to be opened or swung aside, an anviljaw mounted on one of said vertically pivoted W or door-like parts, andmeans for locking the said parts together.

10. In a crusher, the combination with the frame thereof, of twovertically pivoted or door-like parts at the front end of said fragneand both of which parts are adapted to be opened or swung aside, ananvil jaw mounted on one of said vertically pivoted or door-like parts,and means for looking said parts together, said locking means comprisinga swinging latch mounted on 1 one part, and adapted to engage aprojection on the other part, a screw for securing said swinging latchin place, and a hand wheel for turning said screw.'

- 11. In a crusher, the combination with the frame thereof, of twopivoted d0or-1ike parts at the front of said frame and both of whichparts are adapted to be opened or swung aside, each of said door-likeparts gar'rying a side plate. of the crushing cham- 1?. In a crusher,the combination with the frame thereof, of two pivoted door-like partsat the front of said frame, and both of which parts are adapted to beopened or swung aside, one of said door-like parts forming the anviljaw, and the said doorlike parts, when closed, forming the sides of thecrushing chamber.

In testimony whereof I afiix my signature, in presence of two witnesses.

THOMAS JOSEPH STURTEVAN'P.

Witnesses:

L. H. STURTEVANT, W. H. Ems.

